diff options
Diffstat (limited to 'drivers/net/sfc/tx.c')
| -rw-r--r-- | drivers/net/sfc/tx.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c index 11127757c05d..5f01371baaf9 100644 --- a/drivers/net/sfc/tx.c +++ b/drivers/net/sfc/tx.c @@ -64,12 +64,14 @@ static inline void efx_dequeue_buffer(struct efx_tx_queue *tx_queue, { if (buffer->unmap_len) { struct pci_dev *pci_dev = tx_queue->efx->pci_dev; + dma_addr_t unmap_addr = (buffer->dma_addr + buffer->len - + buffer->unmap_len); if (buffer->unmap_single) - pci_unmap_single(pci_dev, buffer->unmap_addr, - buffer->unmap_len, PCI_DMA_TODEVICE); + pci_unmap_single(pci_dev, unmap_addr, buffer->unmap_len, + PCI_DMA_TODEVICE); else - pci_unmap_page(pci_dev, buffer->unmap_addr, - buffer->unmap_len, PCI_DMA_TODEVICE); + pci_unmap_page(pci_dev, unmap_addr, buffer->unmap_len, + PCI_DMA_TODEVICE); buffer->unmap_len = 0; buffer->unmap_single = 0; } @@ -233,7 +235,6 @@ static inline int efx_enqueue_skb(struct efx_tx_queue *tx_queue, } while (len); /* Transfer ownership of the unmapping to the final buffer */ - buffer->unmap_addr = unmap_addr; buffer->unmap_single = unmap_single; buffer->unmap_len = unmap_len; unmap_len = 0; @@ -805,6 +806,7 @@ static inline void efx_tso_put_header(struct efx_tx_queue *tx_queue, static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue) { struct efx_tx_buffer *buffer; + dma_addr_t unmap_addr; /* Work backwards until we hit the original insert pointer value */ while (tx_queue->insert_count != tx_queue->write_count) { @@ -816,15 +818,15 @@ static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue) buffer->len = 0; buffer->continuation = 1; if (buffer->unmap_len) { + unmap_addr = (buffer->dma_addr + buffer->len - + buffer->unmap_len); if (buffer->unmap_single) pci_unmap_single(tx_queue->efx->pci_dev, - buffer->unmap_addr, - buffer->unmap_len, + unmap_addr, buffer->unmap_len, PCI_DMA_TODEVICE); else pci_unmap_page(tx_queue->efx->pci_dev, - buffer->unmap_addr, - buffer->unmap_len, + unmap_addr, buffer->unmap_len, PCI_DMA_TODEVICE); buffer->unmap_len = 0; } |